Click the green flag while holding left shift to put it in turbo mode (which is highly suggested) and then click the green flag again. Also, if you want to see the chords as they are played, click on the 'Chords' button, or in that area. Also, there are four 'movements', and if you stick around to the last one, you will discover something amazing...
I made this music all by myself. I used the Pachbel Canon Chord Progression, and improvised from there. Some possible uses for this: turn it on, and listen while doing homework, or reading; background music for anything; ringtone; idk what else, you come up with some and put it in the comments.